[Method for studying internal tensions at the intervertebral junction in extreme postures. Description of experimental material and preliminary results].

G Escande; P Charvet; M Guillot; J Chazal; A Tanguy; M Amrane; J P Levai; G Vanneuville

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PubMed · 7344737

[Method for studying internal tensions at the intervertebral junction in extreme postures. Description of experimental material and preliminary results].

G Escande·P Charvet·M Guillot·J Chazal·A Tanguy·M Amrane·J P Levai·G Vanneuville

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Abstract

The authors describe a device for measuring the resultant tensions existing at the intervertebral junction (or its constitutive elements) in all spine attitudes. The reported method has been applied to the L4-L5 junction of a spine taken from the corpse of a 50 years old man. Although incomplete, the results suggest the following points: --the L4-L5 intervertebral junction seems to be very deformable, particularly in the sagittal plane; --the intervertebral disk is probably an elastic support which sustains shear stresses during flexion, extension and bending movements in the frontal plane; --during flexion, articular processes seem to be movement leaders as well as supports; --ligaments seem to play a small mechanical role, but their proprioceptive function seems essential.

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Biomechanical Phenomena Humans Intervertebral Disc Lumbar Vertebrae Male Middle Aged Movement Posture English Abstract Journal Article

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G Escande, P Charvet, M Guillot, J Chazal, A Tanguy, M Amrane, J P Levai, G Vanneuville. 1981. [Method for studying internal tensions at the intervertebral junction in extreme postures. Description of experimental material and preliminary results].. https://pubmed.ncbi.nlm.nih.gov/7344737/

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